<template>
  <div>
    <!-- 图片上传组件:这里整合的是elementUI的组件-->
    <el-upload
      style="display: none"
      :key="randomString(3)"
      class='avatar-uploader'
      :action='upload.url'
      :headers="upload.headers"
      :accept="upload.accept"
      list-type="picture-card"
      :data="upload.data"
      :show-file-list='false'
      :on-success='uploadSuccess'
      :on-error='uploadError'
      :before-upload='beforeUpload'>
    </el-upload>
    <!-- 实际富文本显示区域 -->
    <quill-editor
      class='editor'
      :id="randomString(3)"
      :ref="torefa"
      v-model='content'
      :options='editorOption'
      @blur='onEditorBlur($event)' @focus='onEditorFocus($event)'
      @change='onEditorChange($event)'>
    </quill-editor>
  </div>
</template>
<script>

const toolbarOptions = [
  ['bold', 'italic', 'underline', 'strike'], // 加粗 斜体 下划线 删除线
  ['blockquote', 'code-block'], // 引用  代码块
  [{header: 1}, {header: 2}], // 1、2 级标题
  [{list: 'ordered'}, {list: 'bullet'}], // 有序、无序列表
  [{script: 'sub'}, {script: 'super'}], // 上标/下标
  [{indent: '-1'}, {indent: '+1'}], // 缩进
  // [{'direction': 'rtl'}],                         // 文本方向
  [{size: ['small', false, 'large', 'huge']}], // 字体大小
  [{header: [1, 2, 3, 4, 5, 6, false]}], // 标题
  [{color: []}, {background: []}], // 字体颜色、字体背景颜色
  [{font: []}], // 字体种类
  [{align: []}], // 对齐方式
  ['clean'], // 清除文本格式
  ['link', 'image'] // 链接、图片、视频 ['link', 'image', 'video']
]

export default {
  props: {
    /* 编辑器的内容 */
    value: {
      type: String,
      default: '',
    },
    /* 图片大小 */
    maxSize: {
      type: Number,
      default: 1024 * 5 // kb
    },
    quillIndex:{
      type:Number,
      default:0
    },
    toref: {
      type: String,
      default:"quillEditor"
    },
  },
  watch:{
    value(){
      this.content = this.value;
    },
    toref(){
      this.torefa = this.toref;
    }
  },
  data() {
    return {
      content: this.value,
      torefa:this.toref,
      quillUpdateImg: false, // 根据图片上传状态来确定是否显示loading动画，刚开始是false,不显示
      editorOption: {
        theme: 'snow', // or 'bubble'
        placeholder: '请在这里输入...',
        modules: {
          imageResize: {
            displayStyles: {
              backgroundColor: 'black',
              border: 'none',
              color: 'white'
            },
            modules: ['Resize', 'DisplaySize', 'Toolbar']
          },
          toolbar: {
            container: toolbarOptions,
            handlers: {
              // 处理图片上传
              image: (value) => {
                if (value) {
                  // 触发input框选择图片文件
                  document.querySelector('.avatar-uploader input').click()
                } else {
                  this.quill.format('image', false)
                }
              }
            }
          }
        }
      },
      upload: {
        url: this.$action_url,
        headers: {Authorization: window.sessionStorage.getItem('token')},
        data:{
          folder:'evaluation_img'
        },
        name: 'file',
        accept: 'image/*',
        limitCount: 1,
      },
    }
  },
  methods: {
    onEditorBlur() {
      // 失去焦点事件
    },
    onEditorFocus() {
      // 获得焦点事件
    },
    onEditorChange() {
      // 内容改变事件
      this.$emit('input', this.content)
    },
    randomString(len){
      //默认去掉了容易混淆的字符oOLl,9gq,Vv,Uu,I1
      var chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678';
      var tempLen = chars.length, tempStr='';
      for(var i=0; i<len; ++i){
        tempStr += chars.charAt(Math.floor(Math.random() * tempLen ));
      }
      return tempStr;
    },
    // 富文本图片上传前
    beforeUpload() {
      // 显示loading动画
      this.quillUpdateImg = true
    },
    uploadSuccess(res, file) {
      console.log("this:",this.$refs);
      let toeval = "this.$refs."+this.toref+".quill"
      console.log("toeval",toeval);
      let quill = eval(toeval);
      console.log("quill",quill);
      // res为图片服务器返回的数据
      // // 获取富文本组件实例
      // let quill = this.$refs.myQuillEditor.quill
      // 如果上传成功
      if (res.code === 200) {
        this.$message.success('图片上传成功')
        // 获取光标所在位置
        let length = quill.selection.savedRange.index;
        // 插入图片  res.url为服务器返回的图片地址，需要拼接图片服务根地址
        quill.insertEmbed(length, 'image', this.$http_url + 'storage/' + res.data.list.path)
        // 调整光标到最后
        quill.setSelection(length + 1)
      } else {
        this.$message.warning('图片插入失败')
      }
      // loading动画消失
      this.quillUpdateImg = false
    },
    // 富文本图片上传失败
    uploadError() {
      // loading动画消失
      this.quillUpdateImg = false
      this.$message.warning('图片插入失败')
    }
  }
}
</script>
<!-- 富文本样式，需要加哦，不然有问题 -->
<style>
.editor {
  line-height: normal !important;
  height: 300px;
}

.ql-snow .ql-tooltip[data-mode=link]::before {
  content: '请输入链接地址:';
}

.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: '保存';
  padding-right: 0px;
}

.ql-snow .ql-tooltip[data-mode=video]::before {
  content: '请输入视频地址:';
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: '14px';
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value=small]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value=small]::before {
  content: '10px';
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value=large]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value=large]::before {
  content: '18px';
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value=huge]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value=huge]::before {
  content: '32px';
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: '文本';
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='1']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='1']::before {
  content: '标题1';
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='2']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='2']::before {
  content: '标题2';
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='3']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='3']::before {
  content: '标题3';
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='4']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='4']::before {
  content: '标题4';
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='5']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='5']::before {
  content: '标题5';
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value='6']::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value='6']::before {
  content: '标题6';
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: '标准字体';
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value=serif]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value=serif]::before {
  content: '衬线字体';
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value=monospace]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value=monospace]::before {
  content: '等宽字体';
}
</style>
